????? ????? ???? ??? |Zeta Fire alarm system????? ????? ???? ??? ?? ???? ?? ???? ???? GLT Exports ?? ??? ????? ??? Zeta ?? ??? ???? ? ???? ? ????? ? ??? (1985) ????? ??.???? ??? ?? ????? ??????? ????? ???? ? ????? ???? ?? ?????? ?????? ????? ????? ???? ??? ?????? ? ?????? ???? ????? ?????? ??? ??? ????? ?????? ???? ????? ???.????? ???? ??? ???? :??